fix empty timestamp list inference

shixian.shi

2023-09-06 13c2af5de44d2ac4cb09677ab4fb07f37ade2b98

 funasr/runtime/onnxruntime/src/paraformer-online.cpp

@@ -469,7 +469,7 @@
    return result;
}

string ParaformerOnline::Forward(float* din, int len, bool input_finished)
string ParaformerOnline::Forward(float* din, int len, bool input_finished, const std::vector<std::vector<float>> &hw_emb)
{
    std::vector<std::vector<float>> wav_feats;
    std::vector<float> waves(din, din+len);